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A Dual-Limit-Erosion Approach to Estimate Fracture Zone of RC Slabs Subjected to High Velocity Impact Loads

[+] Author Affiliations
Masaharu Itoh, Ryo Matsuzawa

ITOCHU Techno-Solutions Corp., Chiyoda, Japan

Masuhiro Beppu

National Defense Academy, Yokosuka, Japan

Paper No. OMAE2016-54694, pp. V009T12A023; 8 pages
  • ASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering
  • Volume 9: Prof. Norman Jones Honoring Symposium on Impact Engineering; Prof. Yukio Ueda Honoring Symposium on Idealized Nonlinear Mechanics for Welding and Strength of Structures
  • Busan, South Korea, June 19–24, 2016
  • Conference Sponsors: Ocean, Offshore and Arctic Engineering Division
  • ISBN: 978-0-7918-5000-8
  • Copyright © 2016 by ASME


This paper presents a novel erosion approach to reproduce fracture of concrete subjected to impact loadings. An erosion method is a numerical technique to remove highly distorted Lagrangian meshes which, if not deleted, tend to decrease the accuracy of numerical results obtained and often cause to terminate the calculation prematurely. Existing erosion criteria generally use a single thermo-mechanical variable for the deformation measure such as strain, stress tensor or damage. In this study we propose to utilize two measures to activate the erosion function with a view to better reproducing fracture zones of concrete by distinguishing the element deformation in compression or tension state. Test calculations in two and three dimensions are carried out to investigate the applicability of the proposed erosion method, and the numerical results are discussed with reference to available experimental data.

Copyright © 2016 by ASME



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